/*
 * ZK Futures - the calculators (tool pages, their overview and the embed pages other sites frame). On the site's pages the tokens
 * come from site.css; the embed page loads this file alone, so .bs-embed sets the same tokens and BS.Web.Blog's --bs-article-*
 * theme itself, with system fonts (an embed loads nothing from other servers).
 */

.bs-embed {
  --zf-bg: oklch(0.16 0.022 275);
  --zf-surface: oklch(0.21 0.028 277);
  --zf-surface-2: oklch(0.26 0.033 279);
  --zf-fg: oklch(0.96 0.006 275);
  --zf-muted: oklch(0.72 0.03 277);
  --zf-border: oklch(0.32 0.04 282);
  --zf-primary: oklch(0.62 0.24 288);
  --zf-primary-soft: oklch(0.8 0.13 290);
  --zf-long: oklch(0.85 0.24 145);
  --zf-warning: oklch(0.82 0.17 85);
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --bs-article-bg: var(--zf-bg);
  --bs-article-ink: oklch(0.9 0.012 275);
  --bs-article-muted: var(--zf-muted);
  --bs-article-accent: var(--zf-primary-soft);
  --bs-article-accent-ink: oklch(0.16 0.022 275);
  --bs-article-surface: var(--zf-surface);
  --bs-article-border: var(--zf-border);
  --bs-article-font: var(--font-sans);
  color-scheme: dark;
  line-height: 1.5;
}

.bs-embed *,
.bs-embed *::before,
.bs-embed *::after {
  box-sizing: border-box;
}

.bs-embed a {
  color: var(--zf-primary-soft);
}

/* The site's buttons (site.css) for the embed page, which loads this file alone. */
.bs-embed .zf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--zf-border);
  border-radius: 0.75rem;
  background: var(--zf-surface-2);
  padding: 0.55rem 1rem;
  color: var(--zf-fg);
  font-size: 0.875rem;
  font-weight: 700;
}

.bs-embed .zf-btn--primary {
  border-color: var(--zf-primary);
  background: var(--zf-primary);
  color: #fff;
  box-shadow: 0 0 24px color-mix(in oklch, var(--zf-primary) 45%, transparent);
}

.bs-embed .zf-btn:focus-visible {
  outline: 2px solid var(--zf-primary-soft);
  outline-offset: 2px;
}

/* ---------- Page head, notes, explanation ---------- */

.zf-tool {
  max-width: 72rem;
}

.zf-tool__head {
  position: relative;
}

.zf-tool__head .zf-eyebrow a {
  color: inherit;
  text-decoration: none;
}

.zf-tool__note {
  margin: 1.5rem 0 0;
  font-size: 0.875rem;
}

.zf-tool__explain {
  max-width: 48rem;
  margin-top: 3rem;
}

.zf-tool__explain h2,
.zf-tool__cta h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
}

.zf-tool__explain li {
  margin: 0.5rem 0;
  color: color-mix(in oklch, var(--zf-fg) 85%, var(--zf-muted));
}

.zf-tool__guides {
  margin: 2rem 0 0;
}

.zf-tool__guides a {
  color: var(--zf-primary-soft);
  font-weight: 600;
}

.zf-tool .bs-embed-offer {
  max-width: 48rem;
  margin-top: 3rem;
}

.zf-tool__cta {
  max-width: 48rem;
  margin-top: 3rem;
  border: 1px solid color-mix(in oklch, var(--zf-primary) 40%, transparent);
  border-radius: 1rem;
  background: linear-gradient(135deg, oklch(0.3 0.12 288) 0%, oklch(0.21 0.05 280) 70%);
  padding: 1.5rem;
}

.zf-tool__cta .zf-eyebrow {
  color: var(--zf-warning);
}

/* The overview's cards (also the reports' list). */
.zf-tools {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.zf-tools a {
  display: grid;
  gap: 0.5rem;
  height: 100%;
  border: 1px solid var(--zf-border);
  border-radius: 1rem;
  background: color-mix(in oklch, var(--zf-surface) 80%, transparent);
  padding: 1.25rem 1.4rem;
  color: var(--zf-fg);
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.zf-tools a:is(:hover, :focus-visible) {
  border-color: color-mix(in oklch, var(--zf-primary) 70%, transparent);
}

.zf-tools a:focus-visible {
  outline: 2px solid var(--zf-primary-soft);
  outline-offset: 2px;
}

.zf-tools strong {
  font-size: 1.125rem;
}

/* ---------- The calculator: form and result side by side, stacked on narrow screens ---------- */

.zf-calc {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
  color: var(--zf-fg);
  font-family: var(--font-sans);
}

.bs-embed .zf-calc {
  margin-top: 0;
}

@media (min-width: 46rem) {
  .zf-calc {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .zf-calc__results {
    position: sticky;
    top: 5.5rem;
  }

  .bs-embed .zf-calc__results {
    top: 0.75rem;
  }
}

.zf-calc__form,
.zf-calc__result {
  border: 1px solid var(--zf-border);
  border-radius: 1rem;
  background: color-mix(in oklch, var(--zf-surface) 85%, transparent);
  padding: 1.25rem;
}

.zf-calc__form {
  display: grid;
  gap: 1rem;
}

.zf-calc__results {
  display: grid;
  gap: 1rem;
}

.zf-calc__results:focus {
  outline: none;
}

.zf-calc__pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.75rem;
}

.zf-field {
  display: grid;
  gap: 0.35rem;
  min-width: 0;
}

.zf-field__label,
.zf-calc__group-title {
  color: var(--zf-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.zf-field__input {
  width: 100%;
  min-height: 2.75rem;
  border: 1px solid var(--zf-border);
  border-radius: 0.65rem;
  background: var(--zf-bg);
  padding: 0.55rem 0.75rem;
  color: var(--zf-fg);
  font: inherit;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.zf-field__input:focus-visible,
.zf-segment__input:focus-visible + .zf-segment__label {
  outline: 2px solid var(--zf-primary-soft);
  outline-offset: 2px;
}

.zf-field__hint {
  margin: 0;
  color: var(--zf-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.zf-field--error .zf-field__input {
  border-color: oklch(0.72 0.2 16);
}

.zf-field__error {
  margin: 0;
  color: oklch(0.8 0.15 16);
  font-size: 0.8125rem;
}

/* A choice as a segmented control (radio buttons). */
.zf-segment {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  border: 0;
  padding: 0;
  min-width: 0;
}

.zf-segment__options {
  display: grid;
  grid-auto-columns: minmax(0, 1fr);
  grid-auto-flow: column;
  gap: 0.25rem;
  border: 1px solid var(--zf-border);
  border-radius: 0.75rem;
  background: var(--zf-bg);
  padding: 0.25rem;
}

.zf-segment__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.zf-segment__label {
  display: grid;
  place-items: center;
  min-height: 2.25rem;
  border-radius: 0.55rem;
  color: var(--zf-muted);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
}

.zf-segment__input:checked + .zf-segment__label {
  background: color-mix(in oklch, var(--zf-primary) 28%, transparent);
  color: var(--zf-fg);
}

.zf-calc__group {
  display: grid;
  gap: 0.85rem;
  margin: 0.5rem 0 0;
  border: 0;
  border-top: 1px solid var(--zf-border);
  padding: 1.25rem 0 0;
}

.zf-calc__group-title {
  padding: 0;
}

.zf-calc__submit {
  justify-self: start;
  min-height: 2.75rem;
  padding-inline: 1.5rem;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

/* The result. */
.zf-calc__title {
  margin: 0 0 0.75rem;
  color: var(--zf-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.zf-calc__headline {
  display: grid;
  gap: 0.15rem;
  margin: 0;
}

.zf-calc__headline span {
  color: var(--zf-muted);
  font-size: 0.875rem;
}

.zf-calc__headline strong {
  color: var(--zf-primary-soft);
  font-size: clamp(1.6rem, 1.2rem + 1.5vw, 2.1rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.zf-calc__list {
  display: grid;
  gap: 0.1rem;
  margin: 1rem 0 0;
}

.zf-calc__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  border-top: 1px solid color-mix(in oklch, var(--zf-border) 70%, transparent);
  padding: 0.55rem 0;
}

.zf-calc__row dt {
  color: var(--zf-muted);
  font-size: 0.9rem;
}

.zf-calc__row dd {
  margin: 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.zf-calc__message {
  margin: 0.75rem 0 0;
  border-radius: 0.65rem;
  padding: 0.6rem 0.8rem;
  font-size: 0.9rem;
}

.zf-calc__message--info {
  background: color-mix(in oklch, var(--zf-primary) 12%, transparent);
}

.zf-calc__message--ok {
  background: color-mix(in oklch, var(--zf-long) 12%, transparent);
  color: color-mix(in oklch, var(--zf-long) 60%, var(--zf-fg));
}

.zf-calc__message--warn {
  background: color-mix(in oklch, var(--zf-warning) 12%, transparent);
  color: color-mix(in oklch, var(--zf-warning) 70%, var(--zf-fg));
}

.zf-calc__formula {
  margin-top: 1rem;
  font-size: 0.875rem;
}

.zf-calc__formula summary {
  color: var(--zf-primary-soft);
  cursor: pointer;
  font-weight: 600;
}

.zf-calc__formula ol {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  color: color-mix(in oklch, var(--zf-fg) 80%, var(--zf-muted));
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  overflow-wrap: anywhere;
}

.zf-report .zf-note {
  margin: 0 0 2rem;
}

@media (prefers-reduced-motion: reduce) {
  .zf-tools a {
    transition: none;
  }
}